3. Aperture – the diameter of the opening in which light is let into your camera sensor.

Each of these factors work together in making an image. They are all adjustable and each has a reason for being. Hence the name “Exposure Triangle”.

In the next series, we will look at each of these aspects to the exposure triangle with examples to show how the different settings can change the outcome of your image. We will begin with ISO and speed then move to aperture since aperture is where your creativity begins.